bool "68020 support"
depends on MMU
select GENERIC_ATOMIC64
+ select CPU_HAS_ADDRESS_SPACES
help
If you anticipate running this kernel on a computer with a MC68020
processor, say Y. Otherwise, say N. Note that the 68020 requires a
bool "68030 support"
depends on MMU && !MMU_SUN3
select GENERIC_ATOMIC64
+ select CPU_HAS_ADDRESS_SPACES
help
If you anticipate running this kernel on a computer with a MC68030
processor, say Y. Otherwise, say N. Note that a MC68EC030 will not
bool "68040 support"
depends on MMU && !MMU_SUN3
select GENERIC_ATOMIC64
+ select CPU_HAS_ADDRESS_SPACES
help
If you anticipate running this kernel on a computer with a MC68LC040
or MC68040 processor, say Y. Otherwise, say N. Note that an
bool "68060 support"
depends on MMU && !MMU_SUN3
select GENERIC_ATOMIC64
+ select CPU_HAS_ADDRESS_SPACES
help
If you anticipate running this kernel on a computer with a MC68060
processor, say Y. Otherwise, say N.
return 1;
}
+/*
+ * Not all varients of the 68k family support the notion of address spaces.
+ * The traditional 680x0 parts do, and they use the sfc/dfc registers and
+ * the "moves" instruction to access user space from kernel space. Other
+ * family members like ColdFire don't support this, and only have a single
+ * address space, and use the usual "move" instruction for user space access.
+ *
+ * Outside of this difference the user space access functions are the same.
+ * So lets keep the code simple and just define in what we need to use.
+ */
+#ifdef CONFIG_CPU_HAS_ADDRESS_SPACES
+#define MOVES "moves"
+#else
+#define MOVES "move"
+#endif
+
/*
* The exception table consists of pairs of addresses: the first is the
* address of an instruction that is allowed to fault, and the second is
#define __put_user_asm(res, x, ptr, bwl, reg, err) \
asm volatile ("\n" \
- "1: moves."#bwl" %2,%1\n" \
+ "1: "MOVES"."#bwl" %2,%1\n" \
"2:\n" \
" .section .fixup,\"ax\"\n" \
" .even\n" \
{ \
const void __user *__pu_ptr = (ptr); \
asm volatile ("\n" \
- "1: moves.l %2,(%1)+\n" \
- "2: moves.l %R2,(%1)\n" \
+ "1: "MOVES".l %2,(%1)+\n" \
+ "2: "MOVES".l %R2,(%1)\n" \
"3:\n" \
" .section .fixup,\"ax\"\n" \
" .even\n" \
#define __get_user_asm(res, x, ptr, type, bwl, reg, err) ({ \
type __gu_val; \
asm volatile ("\n" \
- "1: moves."#bwl" %2,%1\n" \
+ "1: "MOVES"."#bwl" %2,%1\n" \
"2:\n" \
" .section .fixup,\"ax\"\n" \
" .even\n" \
"10: move.l %3,%0\n" \
- " sub."#bwl" %1,%1\n" \
+ " sub.l %1,%1\n" \
" jra 2b\n" \
" .previous\n" \
"\n" \
const void *__gu_ptr = (ptr); \
u64 __gu_val; \
asm volatile ("\n" \
- "1: moves.l (%2)+,%1\n" \
- "2: moves.l (%2),%R1\n" \
+ "1: "MOVES".l (%2)+,%1\n" \
+ "2: "MOVES".l (%2),%R1\n" \
"3:\n" \
" .section .fixup,\"ax\"\n" \
" .even\n" \
#define __constant_copy_from_user_asm(res, to, from, tmp, n, s1, s2, s3)\
asm volatile ("\n" \
- "1: moves."#s1" (%2)+,%3\n" \
+ "1: "MOVES"."#s1" (%2)+,%3\n" \
" move."#s1" %3,(%1)+\n" \
- "2: moves."#s2" (%2)+,%3\n" \
+ "2: "MOVES"."#s2" (%2)+,%3\n" \
" move."#s2" %3,(%1)+\n" \
" .ifnc \""#s3"\",\"\"\n" \
- "3: moves."#s3" (%2)+,%3\n" \
+ "3: "MOVES"."#s3" (%2)+,%3\n" \
" move."#s3" %3,(%1)+\n" \
" .endif\n" \
"4:\n" \
#define __constant_copy_to_user_asm(res, to, from, tmp, n, s1, s2, s3) \
asm volatile ("\n" \
" move."#s1" (%2)+,%3\n" \
- "11: moves."#s1" %3,(%1)+\n" \
+ "11: "MOVES"."#s1" %3,(%1)+\n" \
"12: move."#s2" (%2)+,%3\n" \
- "21: moves."#s2" %3,(%1)+\n" \
+ "21: "MOVES"."#s2" %3,(%1)+\n" \
"22:\n" \
" .ifnc \""#s3"\",\"\"\n" \
" move."#s3" (%2)+,%3\n" \
- "31: moves."#s3" %3,(%1)+\n" \
+ "31: "MOVES"."#s3" %3,(%1)+\n" \
"32:\n" \
" .endif\n" \
"4:\n" \
asm volatile ("\n"
" tst.l %0\n"
" jeq 2f\n"
- "1: moves.l (%1)+,%3\n"
+ "1: "MOVES".l (%1)+,%3\n"
" move.l %3,(%2)+\n"
" subq.l #1,%0\n"
" jne 1b\n"
"2: btst #1,%5\n"
" jeq 4f\n"
- "3: moves.w (%1)+,%3\n"
+ "3: "MOVES".w (%1)+,%3\n"
" move.w %3,(%2)+\n"
"4: btst #0,%5\n"
" jeq 6f\n"
- "5: moves.b (%1)+,%3\n"
+ "5: "MOVES".b (%1)+,%3\n"
" move.b %3,(%2)+\n"
"6:\n"
" .section .fixup,\"ax\"\n"
" tst.l %0\n"
" jeq 4f\n"
"1: move.l (%1)+,%3\n"
- "2: moves.l %3,(%2)+\n"
+ "2: "MOVES".l %3,(%2)+\n"
"3: subq.l #1,%0\n"
" jne 1b\n"
"4: btst #1,%5\n"
" jeq 6f\n"
" move.w (%1)+,%3\n"
- "5: moves.w %3,(%2)+\n"
+ "5: "MOVES".w %3,(%2)+\n"
"6: btst #0,%5\n"
" jeq 8f\n"
" move.b (%1)+,%3\n"
- "7: moves.b %3,(%2)+\n"
+ "7: "MOVES".b %3,(%2)+\n"
"8:\n"
" .section .fixup,\"ax\"\n"
" .even\n"
return count;
asm volatile ("\n"
- "1: moves.b (%2)+,%4\n"
+ "1: "MOVES".b (%2)+,%4\n"
" move.b %4,(%1)+\n"
" jeq 2f\n"
" subq.l #1,%3\n"
asm volatile ("\n"
"1: subq.l #1,%1\n"
" jmi 3f\n"
- "2: moves.b (%0)+,%2\n"
+ "2: "MOVES".b (%0)+,%2\n"
" tst.b %2\n"
" jne 1b\n"
" jra 4f\n"
asm volatile ("\n"
" tst.l %0\n"
" jeq 3f\n"
- "1: moves.l %2,(%1)+\n"
+ "1: "MOVES".l %2,(%1)+\n"
"2: subq.l #1,%0\n"
" jne 1b\n"
"3: btst #1,%4\n"
" jeq 5f\n"
- "4: moves.w %2,(%1)+\n"
+ "4: "MOVES".w %2,(%1)+\n"
"5: btst #0,%4\n"
" jeq 7f\n"
- "6: moves.b %2,(%1)\n"
+ "6: "MOVES".b %2,(%1)\n"
"7:\n"
" .section .fixup,\"ax\"\n"
" .even\n"